/**
 * NaN: 特殊值，表示非数值，Not a Number
 * Infinity: 无穷大
 * -Infinity: 无穷小
 * Number.MAX_VALUE: 最大值
 * Number.MIN_VALUE: 最小值
 */
console.log(typeof NaN, NaN)
console.log(typeof Infinity, Infinity)
console.log(typeof -Infinity, -Infinity)
console.log(typeof Number.MAX_VALUE, Number.MAX_VALUE)
console.log(typeof Number.MIN_VALUE, Number.MIN_VALUE)
